LARGE RANDOM
Large Random Ceramic Gas Fire Coals
Replacement ceramic coals for gas fires • Large Random irregular shapes • Made in the UK
Approx. coal size 45–55mm approximately
Large Random coals vary in shape and appearance. Approximate shape size range: 45mm to 55mm. Measure several pieces.
- Made in Flint, North Wales
- Hand-finished
- Specialist fireplace product
From £13.99
Regular price
In stock
£13.99
Need help choosing?Why Replace Your Old Ceramic Coals?
Ceramic fire-bed components can deteriorate through prolonged use. Customers often replace them because they are worn, damaged, faded or no longer giving the desired appearance.
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Restore the appearance
Fresh black ceramic coals restore a cleaner, more realistic fuel-bed appearance.
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Realistic flame effect
Irregular Random shapes help create a natural coal-bed appearance when arranged in accordance with the appliance instructions.
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High-temperature ceramic fibre
High-temperature ceramic fibre designed for use in living-flame gas fires, with excellent heat refraction and radiation.
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No ash or real coal mess
Enjoy the visual effect of a traditional coal bed without handling real coal or ash.
Designed to Refract & Radiate Heat
High-temperature ceramic fibre helps refract and radiate heat from the fire into the surrounding area, contributing to the characteristic warmth and glow of a traditional gas coal fire.
Replace worn or damaged ceramic coals with suitable replacements in accordance with the fire manufacturer's instructions, to help maintain the intended appearance and performance of your fire.
Made Here in Flint, North Wales
Our ceramic fire-bed products are manufactured and finished by The Stove Wizard in Flint, North Wales.
From forming the ceramic pieces through to finishing, packing and dispatch, our team works with these products every day. That means you're buying from a specialist fireplace business with hands-on manufacturing experience — not simply a reseller.
- UK manufactured Made at our Flint workshop.
- Specialist knowledge Fireplace products are our business.
- Carefully packed Prepared and dispatched by our own team.

What are Large Random coals?
Large Random coals are irregular ceramic gas fire coals. Approximate shape size range: 45mm to 55mm. They are not Random coals (35–45mm) and not Random Cast (45–70mm).
Approximate size for this product: 45–55mm approximately.
Individual pieces can vary slightly. Compare the approximate dimensions with your existing fire-bed components before ordering.
How to Measure Your Existing Gas Fire Coals
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1. Photograph the layout
Photograph the existing layout before disturbing the coals. Keep this as a reference only.
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2. Select coals to measure
Carefully select several existing coals. Where shapes vary, do not rely on a single piece.
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3. Measure shape, width and height
Note the shape, then measure the widest point and the height/thickness in millimetres.
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4. Check quantity
Count how many coals the fire uses and compare with the pack you are considering.
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5. Compare with this product
Compare your measurements with the approximate 45–55mm range of these Large Random coals.
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6. Check the manufacturer’s instructions
Check the fire manufacturer's instructions for the correct type, quantity, positioning and suitability before ordering or refitting. The photograph must not override those instructions.
Different shapes available
The Stove Wizard supplies:
Compatibility & Suitability
These replacement ceramic coals are not universal. Before ordering, check:
- shape
- width
- height/thickness
- required quantity
- your appliance manufacturer's instructions
Final compatibility and the correct fuel-bed arrangement must always be confirmed against the appliance manufacturer's instructions. Do not alter the prescribed fuel-bed arrangement unless those instructions specifically permit it.
If you cannot confirm that this product is suitable for your appliance, contact us before ordering or consult a Gas Safe registered engineer.
Product details
- Product
- Large Random Ceramic Gas Fire Coals
- Pack sizes
- 10 / 15 / 20 / 30
- Material
- High-temperature ceramic fibre
- Colour
- Black
- Shape
- Random / irregular
- Approximate size
- 45–55mm approximately
- Manufactured
- Flint, North Wales, UK
- Brand
- The Stove Wizard
Large Random Ceramic Gas Fire Coals
The Stove Wizard Large Random coals are irregular replacement ceramic coals for gas fires, made from high-temperature ceramic fibre.
Approximate shape size range: 45mm to 55mm. Packs of 10, 15, 20 and 30. Do not confuse them with Random coals or Random Cast coals.
Our UK made gas fire coals are manufactured and prepared at our workshop in Flint, North Wales. LARGE RANDOM coals are a specialist product, not a one-size-fits-all part.
Always compare the size, shape and quantity with your existing fire-bed components and follow your appliance manufacturer's instructions before ordering.
Frequently asked questions
Are these genuine ceramic gas fire coals?
Yes. These are ceramic gas fire coals manufactured by The Stove Wizard from high-temperature ceramic fibre and finished in black for a traditional coal-bed appearance.
What size are these coals?
These Large Random coals have an approximate shape size range of 45mm to 55mm. Measure several pieces because random shapes vary.
What shape are these coals?
They are Random irregular coals, not Standard square, Cast oval, Triangle or Random Cast coals.
How many replacement coals do I need?
Use the quantity specified in your appliance manufacturer’s instructions. Packs of 10, 15, 20 and 30 are available. Do not add extra coals unless the instructions specifically permit it.
Can I replace only damaged coals?
Replacement of individual damaged pieces may be possible if a matching size and shape is available. Compare the remaining coals and the appliance instructions carefully. Contact us if you are unsure.
How do I measure my existing gas fire coals?
Photograph the layout first, then measure shape, width and height/thickness in millimetres on several pieces. Compare your measurements with the approximate 45–55mm range of these Large Random coals. See How to Measure Your Existing Gas Fire Coals.
Are these suitable for every gas fire?
No. Replacement coals are not universally compatible. Check dimensions, shape, quantity and the appliance manufacturer's instructions. If you cannot confirm suitability, do not order until you have checked or asked for help.
Where are The Stove Wizard ceramic coals made?
They are manufactured and prepared by The Stove Wizard in Flint, North Wales.
Can I arrange gas fire coals however I want?
No. Always follow the fuel-bed arrangement specified by the manufacturer of your gas fire. Do not invent a layout, obstruct burner openings or add extra ceramic pieces unless the instructions specifically allow it. A photograph of the old layout is a reference only.